Drilling machine



DRILLING MACHINE Filed Nov. 1' 1955 APA/E 1/ Patented Aug. 30, 1938 Myinvention relates to a number of holes may be tools whereinva hole orPATENT OFFICE DRILLING MACHINE i Anton Van Veen, West Hartford, Conn.Application November 1, 1935, Serial No. 47,828

2 Claims.

that class of machine drilled in an article with the axis of the drillholding spindle or spindles with the axis of the hole disposed out ofline or holes being drilled;

and a further object of the invention is to provide a machine of thistype in Which a 'plurality of holes may be simultaneously drilled inparallel relation in such articles with disposed; and a still furtherrelatively diagonally the spindles or drills object of the invention isto provide a machine in which holes may be simultaneously drilled in varticles of smaller sizes.

One form of a machine embodying my invention and in the construc theobjects herein set out, be attained is illustrated in drawing in whichtion and use of which as well as others, may the accompanying Figure 1is a top view of my improved drilling machine.

Figure 2 is a view in side elevation of the same. Figure 3 is a view onenlarged scale in longitudinal section on a plane denoted by line 3-3 ofFig. 1.

the dotted Figure 4 is a view in section on a plane denoted by thedotted line '4-4 o Figures 5, 6 and 7 are f Fig. 3.

respectively side, sectional and end views of a pinion of a kindsuitable for drilling on my improved machine.

Figure 8 is a view partially in section showing theV construction of alantern pinion.

Figure 9 is a detail View, scale enlarged from Fig. 3, illustrating themanner for supporting the work to be drilled.

Figure 10 is a diagrammatic view on reduced scale illustrating a littlefor deecting the drills in different arrangement to parallel relation.

Figure 11 is a detail view on reduced scale illustrating anothermodification.

In the accompanying drawing the numeral 6 denotes the spindle carrier ordrill head of my improved machine which may be mounted on any suitablebase I and which may be either slidable on said base or fixed ther Thiscontemplates eon against movement.

that either the article to be operated upon or the carrier may either orboth be moved relatively to each shown a lug 8 projects from carrier andhas an actuating rod to, such rod being conne other. As herein thebottom of the 9 secured therected with any suitable are secured in thebearing in Fig. 3 of the drawingsupports and as shown lhese blocksproject into the` supports Ill and anti-friction bearings I3 of anysuitable type are mounted on the projecting ends of said blocks. Adriving pulley I4 is mounted' upon said bearings for rotation as bymeans of a belt or other driving power, said 5 pulley being hollow forfrictional or other driving contact with spindle driving members locatedwithin the pulley.

A number of spindles I5 are rotatably mounted in the blocks II--I2v inholes I6 which are dis- 1o posed with their axes out of line with theaxes of the active ends of the drills when in operation. These holes maybe lined with bushings I'I of any suitable anti-friction material. Anumber of spindles are employed in each machine, six being l5 shownherein, and they are al1 of the same general construction so that thedescription herein will be applied to a single spindle, it beingunderstood that such description will apply equally to all.

A driver I8, preferably of frusto-conical shape -in'one arrangement andas shown in Fig. 3, is splined tothe spindle in contact with the innersurface of the pulley I4 on one side and with a backing roller I9 of thesame shape on its opposite side, said roller being rotatably mounted inthe blocks II-I2 as by means of stub shafts 20 projecting into saidblocks and seated against anti-friction bearings located in line withthe axis of said stub shafts. One of these bearings 30 isV yieldinglyengaged with the end of the stub -shaft as by means of a spring pressedplunger 22 and as shown in Fig. 3 of the drawing. Anadjusting screw 23is engaged with the stub shaft `at the opposite end of the roller I9 forthe pur- 35 pose of adjusting said roller withv respect to the driverI8. A spring 24 is engaged between and with the end of the driver I8 anda collar 25 on the spindle I5 and tends to yieldingly force the driverI8 into contact with the driving pulley I4. 40 An adjusting screw 26 isengaged with an antifriction bearing 21 seated in the end of the spindlefor the purpose of adjusting the position of said spindle; said screwbeing threaded through a cap 31 that is secured in place in any suitable45 manner, said cap covering the supporting block I2 and being securedagainst the flange thereon. The block I2 may be secured in place as bymeans of screws inserted through a marginal ange thereon, and retainingscrews are threaded 50 through said cap toretain the bearings 2I inplace.

A chuck 28 of any desired character is secured to the working end of thespindle said chuck receiving a drill 29 which is secured in place in 55the chuck in any suitable manner. The drillis slender so that it mayreadily bend from an inclined position as shown in one instance in Fig.3 of the drawing into parallel relation with the other drills similarlyarranged and forming a part of the machine. The drill is graduallycurved from an oblique position in one portion of its length intoparallel relation With the drilling ends of the other drills, for thispurpose guides 30 of any suitable number, three being shown herein,projecting across a hole in a guide supporting block 3l secured in aguide support 32 projecting from the front end of the carrier 6.

This machine is particularly adapted for use in simultaneously drillinga number of-parallel holes in devices of diminutive character, as inlantern'pinions commonly used in clock mechanism and other mechanisms ofthe same general type. These pinions each comprises two disks 33 and anarbor 34 and they may be supported in any desired manner, as inra jig ofany suitable construction. As herein shown this jig comprises aA plate35 having a'drill bushing 36 containing holesl spaced, and relativelypositioned -to correspond with therholesto be drilled in the pinions,this bushing being composedlof hardened metal and constituting a patternfor the drilling of such holes.

The jig or holder also comprises a holder plate 38 supported in anysuitable manner in front of the bushing 36, said holder plate having asocket 39 containing a spring pressed plunger 40. This plunger hasarecess in its e-nd and a recess is also formedin the'bushing 36. Thisprovides a very ready means vfor placing the pinions in position to bedrilled, the arbor 34 being normally pressed against the plunger `Mlwhich is thereby pressed inwardly to enable the opposite end of thespindle to be placed in the recess in the bushing 36, the pinions beingalsoreadily removed by grasping themiandtherewith pressing the plungerinwardly enabling the ends of the arbor to be disengaged from thevsocketsin the bushing and plunger.

In that form of. the structure shown in Fig. 10 th-e spindles 4larefarranged in parallelrelation, having the drivers 42" of cylindricalshape supported by a backing roller 43 of the same shape and the hole inthe pulley 44 being of cylindrical shape to t the drivers. yOtherwisethe structure is substantially the same` as that shown in Fig. 3. Guides4.5 are constructed and supported in the same manner asin the deviceshown in Fig. 3 except that theholes in the guides are relatively formedto cause the drills' tobe deiiected from parallel positions Where theyproject from the spindles again into relatively converging shapes andthen into parallel relation closer together as will be readily seen.

In this structure the drills 29 are secured to drill extensions 46 whichmay be used in any of the different forms, said extensions taking thecurved form. In Fig 11 the drivers 41 are secured directly tov the drillextensions, or they may be secured directly to the drills.

, Wherever the term drill member is used herein it will be understoodthat it covers and includes the drill as a single piece secured Withinthe spindle, or a drill extension, as shown in Fig. 10, or a structurein which the drill or an extension thereof may have the drivers securedthereto as in Fig. 11.

I claim: l

1. A drilling machine including a supporting head, a plurality ofspindles rotatably mounted with their axesv in relatively inclinedpositions in saidhead, drivers loosely attached toI said spindles,collars secured to said spindles, a pulley encircling saidv spindles andhaving an opening with aninclined wall to fit said drivers, a backingroller of frusto-conical shape rotatably mounted in engagement with saiddrivers, springs located between said drivers and the collars on saidspindles to thrust the drivers into contact with said pulley, anadjusting screw in the end of each spindle to adjust its lengthwiseposition, ilexible drill holders secured to said spindles and adapted toreceive straight drills of ordinary construction, and means forpositioning the working parts of said drills in substantially parallel Krelation.

2. A drilling machine including a supporting head, a plurality ofspindles rotatably mounted Lwitl` theirA Vaxes in relatively inclined`positions in said head, drivers secured to said spindles, a pulleyencircling said spindles ,and having an opening with an inclined Wall tot said drivers, a backing roller 'of frusto-conical shape rotatablymounted in engagement with said drivers, stub shafts projecting fromtheends of said backing roller, anti-friction bearings for the ends ofsaid stub shafts in axial` alignment in said shafts, a spring-pressedplunger thrusting against one of said anti-friction bearings, means foradjusting said drivers in an axial direction, flexible drill holderssecured to said spindles and adapted to receive straight drills ofordinary construction, and means for positioning the Working parts ofsaid drills in substantially parallel relation.

ANTON VAN VEEN.

